Lichens are a complex life form that is a symbiotic partnership of two distinct organisms, a fungus, and an alga. This study aimed to investigate phytochemical screening, phenolic contents, and reducing power assay of methanolic and ethanolic extracts of selected lichens from Deosai National Park, Pakistan. Phytochemical analysis of these lichens was also determined in detail. Lichens Dimlaena oreina, Rhizocarpon geographicum, Caloplaca marina, and Rhizoplaca chrysoleuca were used for the study purpose. Lichen samples were collected from the Himalayas of Azad Jammu and Kashmir, Pakistan. Rhizoplacachrysoleuca showed the highest phenolic contents of 17.19± 0.0386 and 17.55± 0.156 with methanol and ethanol respectively. Dimlaena oreina showed the highest reducing power of 2.545 and 2.989, respectively with methanolic and ethanolic extract @125µg/ml as compared to other species. The maximum phytochemical constituents were recorded from Caloplaca marina. The present work gives insight into a further investigation for exploring the potential to be used in medicine as natural products.